What is the weather like in Perth in September?

Expect temperatures between 11°C and 19°C with 18% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Perth in September?

Perth in September scores 64/100 based on 30 years of climate data. Decent conditions for most activities.

Who should visit Perth in September?

September in Perth is ideal for: Families with children, Elderly travelers, Outdoor enthusiasts, Photographers, Cultural tourists.

Perth Weather in September | 30-Year Forecast

Avg High

19°C

Hottest around day 25

Avg Low

11°C

Coolest around day 1

Rainy Days

2days

18% avg rain chance

Sunshine

8hrs/day

Autumn season

Sea Temperature in September

Indian Ocean

17.9°C

Monthly Average

Water Feel

💧Refreshing

Consider a wetsuit for extended swimming

Swim Rating

🏄Cool, wetsuits recommended

Based on average sea surface temperature

Body of Water

Indian Ocean

Perth coastline

Essential Travel Info for Perth

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

AUD

$ Australian dollar

Language

English

Driving

Left side

Safety

High Safety

GPI: 1.565

Travel Intelligence

Exclusive flight analytics & health data for Perth

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Moderate

55/ 100

Traffic Index

Balanced traffic

Peak Daily Arrivals

slots per day

Peak

Jul

Low

Nov

Monthly Traffic Distribution

200

Jan

119

Feb

119

Mar

201

Apr

179

May

121

Jun

248

Jul

184

Aug

224

Sep

220

Oct

112

Nov

225

Dec

Traffic Level

Low Season

Key Connections

Melbourne (MEL)

Sydney Kingsford Smith (SYD)

Denpasar-Bali Island Ngurah Rai (Bali) (DPS)

Karatha Karratha (KTA)

Brisbane City Brisbane (BNE)

Health & Safety Advisory

CDC travel health recommendations

6 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Australia. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Australia.

Japanese Encephalitis

Japanese encephalitis is mainly a concern in the Murray River, and the Outer Torres Strait Islands area.Recommended for travelers whoAre moving to an area with Japanese encephalitis to liveSpend long periods of time, such as a month or more, in areas with Japanese encephalitisFrequently travel to areas with Japanese encephalitisConsider vaccination for travelersSpending less than a month in areas with Japanese encephalitis but will be doing activities that increase risk of infection, such as visiting rural areas, hiking or camping, or staying in places without air conditioning, screens, or bed netsGoing to areas with Japanese encephalitis who are uncertain of their activities or how long they will be thereNot recommended for travelers planning short-term travel to urban areas or traveling at times outside of the Japanese encephalitis season.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Australia.If rabies exposures occur while in Australia, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Yellow Fever

CDC recommendations:Vaccine isnotrecommended.Country entry requirements:Direct travel from United States: Vaccine isnotrequired.Travel from countries with risk for YF virus transmission: Vaccine isrequiredfor travelers ≥1 year old; this includes >12-hour airport transits or layovers in countries with risk for YF virus transmission.3Updated April 23, 2025See footnotes

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Perth?

👌Decent conditions for most activities(64/100)

Short Answer

September is Perth's peak season for good reason: 19°C temperatures and 18% rain probability. But expect crowds (90% of annual maximum) and premium prices.

Decision Factors

Vaccinations required

Yellow Fever

Peak tourist season

90% of annual peak - expect crowds and peak prices

Health precautions needed

Be aware of: Leptospirosis, Melioidosis, Dengue

Plenty of sunshine

10.3h of sunshine daily

Good For

👨‍👩‍👧‍👦
Families with children
Comfortable 19°C temperatures and low 18% rain risk
👴
Elderly travelers
Comfortable 19°C temperature range with manageable humidity
🥾
Outdoor enthusiasts
Ideal hiking conditions: 19°C, 18% rain chance
📸
Photographers
10.3h sunshine, 57% clear skies for golden hour shots
🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites

Who Should Avoid

🏖️
Beach lovers
Sea temperature only 17.9°C - too cold for comfortable swimming
💰
Budget travelers
Peak season means premium prices everywhere

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Perth in September averages 19°C with 18% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Perth in September

What are the temperatures in Perth in September?

Daytime highs average 19°C, nights drop to 11°C. Temperatures remain fairly consistent.

How many rainy days in Perth in September?

Expect around 2 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Perth in September?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is September peak season in Perth?

This is typically peak season with higher prices. Book 2-3 months ahead.

Perth Weather in September

Sea Temperature in September

Perth September Weather Calendar

Essential Travel Info for Perth

Travel Intelligence

Smart Flight Estimator

Flight Connectivity Analysis

Monthly Traffic Distribution

Key Connections

Health & Safety Advisory

COVID-19

Hepatitis B

Japanese Encephalitis

Measles

Rabies

Yellow Fever

Is September a Good Time to Visit Perth?

Decision Factors

Good For

Who Should Avoid

Related Guides

Frequently Asked Questions: Perth in September

What are the temperatures in Perth in September?

How many rainy days in Perth in September?

What to wear in Perth in September?

Is September peak season in Perth?